It's kind of too bad Microsoft's login doesn't work with popular password managers. They have so little I need, that not being able to log in has been no problem. And I'm a Microsoft developer.

Their public offerings just stink, and have gotten consistently worse. Technical offerings are pretty much a joke - the disparity between what they tell you when they train you, and what actually happens in the real world is such a huge gulf, that it's hard to credit any claim Microsoft makes about its products. They consistently underperform, have critical bugs that have been multiply reported for decades, and I do mean decades, that get the most canned responses, some of them having thousands of corroborating reports. The whole Microsoft devops program is a huge failure. Their own products attest to this.